PRAK KOMSTAT MEET4

norm <- function(x, miu, sigma) {1/(sigma*sqrt(2*pi)) * exp(-1/2 * ((x-miu)/sigma)^2)
}
norm(750,800,50)

## [1] 0.004839414

dnorm(750,mean = 800, sd = 50)

## [1] 0.004839414

eks<-function(x, lambda){lambda*exp((-1)*lambda*x)}
eks(15,0.05)

## [1] 0.02361833

cdfexp <- function(x, lambda = 0.05) {
  pdf <- function(t) {
    lambda * exp(-lambda * t)
  }
  hasil <- integrate(pdf, lower = 0, upper = x)
  return(hasil$value)
}
cdfexp(15,0.05)

## [1] 0.5276334

uniform<-function(x,a=0,b=1) {1/(b-a)}
uniform(20,a=10,b=30)

## [1] 0.05

dunif(20,min=10,max=30)

## [1] 0.05